OpenAI vs 
SpaceXAI
Verdict
- OpenAI's flagship leads: GPT-6 Astra at 68.2 vs Grok 4.6 at 60.5.
- OpenAI has the better model in 4 of 4 price bands.
- SpaceXAI's fastest ranked model (Grok 4.20 Multi-Agent, 347 tok/s) beats OpenAI's (GPT-5.4 Mini, 191 tok/s).
- OpenAI publishes more open-weights models (3 vs 1).
- OpenAI ships more often: one model every 26 days against every 41.
Best model per price band
Each provider’s highest-index model below the price ceiling. Purple marks the winner of the band.
| Price band | OpenAI | SpaceXAI |
|---|---|---|
| Under $0.50/M | GPT-5.6 Luna xhigh 58.5$0.450/M | Grok 4.1 Fast thinking 55.6$0.275/M |
| Under $2/M | GPT-5.6 Luna xhigh 58.5$0.450/M | Grok 4.20 thinking 58.4$1.56/M |
| Under $10/M | GPT-6.1 Sol max 67.3$4.00/M | Grok 4.6 high 60.5$3.00/M |
| Any price | GPT-6 Astra 68.2$20.00/M | Grok 4.6 high 60.5$3.00/M |
Line-up
| Metric | OpenAI | SpaceXAI |
|---|---|---|
| Flagship index | 68.2 | 60.5 |
| Ranked models | 42 | 15 |
| Open-weights models | 3 | 1 |
| Cheapest ranked, $/M | $0.128 | $0.275 |
| Fastest ranked, tok/s | 191 | 347 |
| Release cadence, days | 26 | 41 |
| Last release | 26 Oct 2026 | 21 Sep 2026 |
| Next expected | 10 Nov 2026 – 1 Dec 2026 | 15 Oct 2026 – 17 Nov 2026 |